435 lines
14 KiB
Python
435 lines
14 KiB
Python
# Copyright (c) 2015 Mirantis Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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# implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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from oslo_config import cfg
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from oslo_log import log as logging
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import six
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import yaml
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from sahara.utils import general as g
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from sahara.utils.openstack import base as b
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from sahara.utils.openstack import heat as h
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from sahara.utils.openstack import neutron
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CONF = cfg.CONF
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LOG = logging.getLogger(__name__)
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SSH_PORT = 22
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def _get_inst_name(ng):
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return {
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"list_join": [
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'-',
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[ng.cluster.name.lower(), ng.name.lower(),
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{"get_param": "instance_index"}]
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]
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}
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def _get_aa_group_name(cluster):
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return g.generate_aa_group_name(cluster.name)
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def _get_port_name(ng):
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return {
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"list_join": [
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'-',
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[ng.cluster.name.lower(), ng.name.lower(),
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{"get_param": "instance_index"},
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"port"]
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]
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}
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def _get_floating_name(ng):
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return {
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"list_join": [
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'-',
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[ng.cluster.name.lower(), ng.name.lower(),
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{"get_param": "instance_index"},
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"floating"]
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]
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}
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def _get_floating_assoc_name(ng):
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return {
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"list_join": [
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'-',
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[ng.cluster.name.lower(), ng.name.lower(),
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{"get_param": "instance_index"},
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"floating", "assoc"]
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]
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}
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def _get_volume_name(ng):
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return {
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"list_join": [
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'-',
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[ng.cluster.name.lower(), ng.name.lower(),
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{"get_param": "instance_index"},
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"volume", {"get_param": "volume_index"}]
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]
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}
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class ClusterStack(object):
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def __init__(self, cluster):
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self.cluster = cluster
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self.node_groups_extra = {}
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self.heat_stack = None
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self.files = {}
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def add_node_group_extra(self, node_group_id, node_count,
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gen_userdata_func):
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self.node_groups_extra[node_group_id] = {
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'node_count': node_count,
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'gen_userdata_func': gen_userdata_func
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}
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def _get_main_template(self):
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outputs = {}
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resources = self._serialize_resources(outputs)
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return yaml.safe_dump({
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"heat_template_version": "2013-05-23",
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"description": "Data Processing Cluster by Sahara",
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"resources": resources,
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"outputs": outputs
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})
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def instantiate(self, update_existing, disable_rollback=True):
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main_tmpl = self._get_main_template()
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heat = h.client()
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kwargs = {
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'stack_name': self.cluster.name,
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'timeout_mins': 180,
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'disable_rollback': disable_rollback,
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'parameters': {},
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'template': main_tmpl,
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'files': self.files}
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if not update_existing:
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LOG.debug("Creating Heat stack with args: {args}"
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.format(args=kwargs))
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b.execute_with_retries(heat.stacks.create, **kwargs)
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else:
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stack = h.get_stack(self.cluster.name)
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LOG.debug("Updating Heat stack {stack} with args: "
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"{args}".format(stack=stack, args=kwargs))
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b.execute_with_retries(stack.update, **kwargs)
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self.heat_stack = h.get_stack(self.cluster.name)
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def _need_aa_server_group(self, node_group):
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for node_process in node_group.node_processes:
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if node_process in self.cluster.anti_affinity:
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return True
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return False
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def _get_anti_affinity_scheduler_hints(self, node_group):
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if not self._need_aa_server_group(node_group):
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return {}
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return {"scheduler_hints": {"group": {"Ref": _get_aa_group_name(
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self.cluster)}}}
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def _serialize_resources(self, outputs):
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resources = {}
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if self.cluster.anti_affinity:
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resources.update(self._serialize_aa_server_group())
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for ng in self.cluster.node_groups:
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resources.update(self._serialize_ng_group(ng, outputs))
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return resources
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def _serialize_ng_group(self, ng, outputs):
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ng_file_name = "file://" + ng.name + ".yaml"
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self.files[ng_file_name] = self._serialize_ng_file(ng)
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outputs[ng.name + "-instances"] = {
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"value": {"get_attr": [ng.name, "instance"]}}
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return {
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ng.name: {
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"type": "OS::Heat::ResourceGroup",
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"properties": {
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"count": self.node_groups_extra[ng.id]['node_count'],
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"resource_def": {
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"type": ng_file_name,
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"properties": {"instance_index": "%index%"}
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}
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}
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}
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}
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def _serialize_ng_file(self, ng):
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return yaml.safe_dump({
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"heat_template_version": "2013-05-23",
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"description": "Node Group {node_group} of "
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"cluster {cluster}".format(node_group=ng.name,
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cluster=ng.cluster.name),
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"parameters": {
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"instance_index": {
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"type": "string"
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}},
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"resources": self._serialize_instance(ng),
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"outputs": {
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"instance": {"value": {
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"physical_id": {"Ref": "inst"},
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"name": {"get_attr": ["inst", "name"]}
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}}}
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})
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def _serialize_auto_security_group(self, ng):
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security_group_name = g.generate_auto_security_group_name(ng)
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security_group_description = (
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"Auto security group created by Sahara for Node Group "
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"'%s' of cluster '%s'." % (ng.name, ng.cluster.name))
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rules = self._serialize_auto_security_group_rules(ng)
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return {
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security_group_name: {
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"type": "AWS::EC2::SecurityGroup",
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"properties": {
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"GroupDescription": security_group_description,
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"SecurityGroupIngress": rules
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}
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}
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}
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def _serialize_auto_security_group_rules(self, ng):
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create_rule = lambda cidr, proto, from_port, to_port: {
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"CidrIp": cidr,
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"IpProtocol": proto,
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"FromPort": six.text_type(from_port),
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"ToPort": six.text_type(to_port)}
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rules = []
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for port in ng.open_ports:
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rules.append(create_rule('0.0.0.0/0', 'tcp', port, port))
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rules.append(create_rule('0.0.0.0/0', 'tcp', SSH_PORT, SSH_PORT))
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# open all traffic for private networks
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if CONF.use_neutron:
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for cidr in neutron.get_private_network_cidrs(ng.cluster):
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for protocol in ['tcp', 'udp']:
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rules.append(create_rule(cidr, protocol, 1, 65535))
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rules.append(create_rule(cidr, 'icmp', -1, -1))
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return rules
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def _serialize_instance(self, ng):
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resources = {}
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properties = {}
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inst_name = _get_inst_name(ng)
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if ng.auto_security_group:
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resources.update(self._serialize_auto_security_group(ng))
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if CONF.use_neutron:
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port_name = _get_port_name(ng)
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resources.update(self._serialize_port(
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port_name, self.cluster.neutron_management_network,
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self._get_security_groups(ng)))
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properties["networks"] = [{"port": {"Ref": "port"}}]
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if ng.floating_ip_pool:
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resources.update(self._serialize_neutron_floating(ng))
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else:
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if ng.floating_ip_pool:
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resources.update(self._serialize_nova_floating(ng))
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if ng.security_groups or ng.auto_security_group:
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properties["security_groups"] = self._get_security_groups(ng)
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# Check if cluster contains user key-pair and include it to template.
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if self.cluster.user_keypair_id:
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properties["key_name"] = self.cluster.user_keypair_id
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gen_userdata_func = self.node_groups_extra[ng.id]['gen_userdata_func']
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userdata = gen_userdata_func(ng, inst_name)
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if ng.availability_zone:
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properties["availability_zone"] = ng.availability_zone
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properties.update(self._get_anti_affinity_scheduler_hints(ng))
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properties.update({
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"name": inst_name,
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"flavor": six.text_type(ng.flavor_id),
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"image": ng.get_image_id(),
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"admin_user": ng.image_username,
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"user_data": userdata
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})
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resources.update({
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"inst": {
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"type": "OS::Nova::Server",
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"properties": properties
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}
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})
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resources.update(self._serialize_volume(ng))
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return resources
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def _serialize_port(self, port_name, fixed_net_id, security_groups):
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properties = {
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"network_id": fixed_net_id,
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"replacement_policy": "AUTO",
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"name": port_name
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}
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if security_groups:
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properties["security_groups"] = security_groups
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return {
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"port": {
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"type": "OS::Neutron::Port",
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"properties": properties,
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}
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}
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def _serialize_neutron_floating(self, ng):
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return {
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"floating_ip": {
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"type": "OS::Neutron::FloatingIP",
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"properties": {
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"floating_network_id": ng.floating_ip_pool,
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"port_id": {"Ref": "port"}
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}
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}
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}
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def _serialize_nova_floating(self, ng):
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return {
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"floating_ip": {
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"type": "OS::Nova::FloatingIP",
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"properties": {
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"pool": ng.floating_ip_pool
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}
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},
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"floating_ip_assoc": {
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"type": "OS::Nova::FloatingIPAssociation",
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"properties": {
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"floating_ip": {"Ref": "floating_ip"},
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"server_id": {"Ref": "inst"}
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}
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}
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}
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def _serialize_volume(self, ng):
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volume_file_name = "file://" + ng.name + "-volume.yaml"
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self.files[volume_file_name] = self._serialize_volume_file(ng)
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return {
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ng.name: {
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"type": "OS::Heat::ResourceGroup",
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"properties": {
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"count": ng.volumes_per_node,
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"resource_def": {
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"type": volume_file_name,
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"properties": {
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"volume_index": "%index%",
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"instance_index": {"get_param": "instance_index"},
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"instance": {"Ref": "inst"}}
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}
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}
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}
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}
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def _serialize_volume_file(self, ng):
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volume_name = _get_volume_name(ng)
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properties = {
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"name": volume_name,
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"size": six.text_type(ng.volumes_size)
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}
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if ng.volume_type:
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properties["volume_type"] = ng.volume_type
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if ng.volumes_availability_zone:
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properties["availability_zone"] = ng.volumes_availability_zone
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if ng.volume_local_to_instance:
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properties["scheduler_hints"] = {
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"local_to_instance": {"get_param": "instance"}}
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return yaml.safe_dump({
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"heat_template_version": "2013-05-23",
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"description": "Volume for node Group {node_group} of "
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"cluster {cluster}".format(node_group=ng.name,
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cluster=ng.cluster.name),
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"parameters": {
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"volume_index": {
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"type": "string"
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},
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"instance_index": {
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"type": "string"
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},
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"instance": {
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"type": "string"
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}},
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"resources": {
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"volume": {
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"type": "OS::Cinder::Volume",
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"properties": properties
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},
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"volume-attachment": {
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"type": "OS::Cinder::VolumeAttachment",
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"properties": {
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"instance_uuid": {"get_param": "instance"},
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"volume_id": {"Ref": "volume"},
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"mountpoint": None
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}
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}},
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"outputs": {}
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})
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def _get_security_groups(self, node_group):
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if not node_group.auto_security_group:
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return node_group.security_groups
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return (list(node_group.security_groups or []) +
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[{"Ref": g.generate_auto_security_group_name(node_group)}])
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def _serialize_aa_server_group(self):
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server_group_name = _get_aa_group_name(self.cluster)
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return {
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server_group_name: {
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"type": "OS::Nova::ServerGroup",
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"properties": {
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"name": server_group_name,
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"policies": ["anti-affinity"]
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}
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}
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}
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def get_node_group_instances(self, node_group):
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for output in self.heat_stack.outputs:
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if output['output_key'] == node_group.name + "-instances":
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return output["output_value"]
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return []
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